An engineering student drops a vibrating 440 Hz tuning fork accidentally downan elevator shaft of a tall building. When the student hears a frequency of 400 Hz,how far down the shaft the tuning fork has fallen?( speed of sound c343 m/s, g= 9.80 m/s)- 3 -The relation between the object distance S, the image distance S' and the focallength f of a lens producing a real image is given as(b)SS'This is called the Gaussian form of the thin lens formula.Another form of the formula, the Newtonian form, is obtained by considering thedistance x, from the object to the first focal point and the distance x, from thesecond focal point to the image.Show thatX,× x; = f²is the Newtonian form of the thin lens formula.

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An engineering student drops a vibrating 440 Hz tuning fork accidentally down an elevator shaft of a tall building. When the student hears a frequency of 400 Hz, how far down the shaft the tuning fork has fallen? ( speed of sound c 343 m/s, g= 9.80 m/s s?)